Someone on the forums is reporting a possible bug with Pathtracer and any material that adjusts normals to complement world position changes. See pic attached.
Reporting forum thread:
https://forums.unrealengine.com/t/ue5-5-5-6-path-tracing-bug-black-faces-with-normal-adjustment-materials-fixrotateaboutaxisnormals-vat-etc/2659129/2
There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-343656 in the post.
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Component | UE - Graphics Features - Path Tracer |
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Affects Versions | 5.7 |
Target Fix | 5.7 |
Fix Commit | 46430122 |
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Created | Sep 30, 2025 |
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Resolved | Oct 1, 2025 |
Updated | Oct 2, 2025 |